package com.acoffee.config;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author acoffee
 * @create 2021-08-05 12:53
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登录成功之后，应该有用户的session;
        Object loginUser = request.getSession().getAttribute("loginUser");
        if (loginUser == null) {//没有登录
            request.setAttribute("msg", "没有权限，请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }else{
            return true;
        }
    }
}
